When the LG logo appears, release the button but keep holding the others.
Ensure the phone battery is at 50% or higher. USB Cable: Use a high-quality, stable USB data cable.
The phone does not turn on but is recognized by the PC. Firmware LG E400 Optimus L3
Release the buttons when the screen displays a yellow screen with the text . Step 2: Configure the Flash Tool
Click on if you want to fix system errors without losing data, or click CSE Flash if your phone is stuck in a bootloop (CSE Flash completely wipes the device and performs a clean installation). A small window will appear; click on the Start button. When the LG logo appears, release the button
Flash the custom CWM recovery image using an app like ROM Manager or via ADB commands. Flash the Custom ROM via CWM: Boot into CWM Recovery (Power + Home + Volume Down).
Gather these essential tools before starting the installation process. Required to run the flashing software. The phone does not turn on but is recognized by the PC
: Download and install the LG United Mobile Driver .
Run the LG Flash Tool in Windows 7 Compatibility Mode .